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Prometheus Monitoring

Getting started

The Swarm client has support for Prometheus monitoring, which can be used to scrape data from a Prometheus server. To start a Prometheus endpoint, use a non-zero value for the -prometheusPort option when starting the client JAR. The service will be stopped when the Swarm client exits.

The actual metrics can be accessed via the /prometheus endpoint. For example, if the node’s IP address is 169.254.10.12, and 9100 is passed to -prometheusPort, then the metrics can be accessed at http://169.254.10.12:9100/prometheus.

Data reported

The client reports metrics for:

  • Basic process info, including:

    • Process uptime

    • CPU time consumed

    • Virtual memory consumed

    • Resident memory consumed

    • File descriptors consumed

  • JVM metrics, such as:

    • CPU usage

    • Memory usage

    • Thread states

    • Garbage collection statistics

    • Class loader statistics